Any reason libtool's ltdl wasn't included directly into 2.3.x rather
than relying on the version provided by the system?

s/system/build environment/ (noting that we don't care whether
its included as part of the operating system, or provided
otherwise).

Anyways, as with every other library OpenLDAP Software is dependent
on (which can be many and varied depending on configure options),
we do not provide independently-developed dependent libraries
as they are, well, independently developed. We rather not
maintain a separate copy or the issues that result from doing
so.

"These censorship operations against schools and libraries are stronger
than ever in the present religio-political climate. They often focus on
fantasy and sf books, which foster that deadly enemy to bigotry and blind
faith, the imagination." -- Ursula K. Le Guin